Owl causes issues with the Youtube site. It occasionally does not work if YT is opened in tabs.. but the most disturbing issue is when you open the picture in fullscreen: Owl inverts all colors.
BTW there are dark theme addons for YT exclusively, but I could not get them to function with Owl installed. Even if you add a "disable owl on site xyz" exception, it would occasionally invert already inverted site (which then appears messed up) and it would completely fail to function if YT is opened in a tab.
That is quite annoying! Currently not usable for me!!

Everything is fine, but for an issue with Facebook. Whenever it is on, the horizontal scroll bar runs to the left, gets very small, some times it even disappears, and the content inside the window becomes unstable when trying to use the H scroll bar.

It's the best dark mode extension that I have tested until now. Great job !

It worls pretty well, except for emoticons on Facebook, in the Top Options Bar... and the REAL Problem, it reverses or makes NEGATIVE the Images on pages, especially .JPG's & .gif's... some Videos have the same problem.

Does not make dark, makes gray.

I'm terribly disappointed. It looks promising, but I cannot add any sites to the whitelist, etc, page. All I can do is turn it off on those pages, which is hardly optimal.

This add-on does not work.

Too much permissions for a browser theme!

Great app but really need to fix medias getting inverted colors (youtube videos, photos in messenger etc.)

This is the best dark mode extension and works so beautifully with every site, I have tried a lot and seems like all of them had more or less some issues but this is perfection.
This extension saves your eyes from the stress it gets. Kudos to the team.

Do you think you will ever release a chrome extension for owl

לא עובד על לינוקס, יש לי פיירפוקס גירסת 55.0.2 וזה לא עובד.
כלומר זה מתקין אבל משנה את התצורה לברירת המחדל, כאילו אין ערכת נושא חדשה.

ניסיתי ללחוץ על "נטרל" ואז "הפעל" שוב וזה עדיין לא עבד.
Not working on Linux, I have Firefox version 55.0.2 and it does not work.
This means that it installs but as like there is no new theme.

I tried to click "Disable" and then "Run" again and it still did not work.

This is the best, For those who are having trouble to customize which websites should be white listed, just search for the directory C:\Users\yourname\AppData\Roaming\Mozilla\Firefox\Profiles\something.default-147XXXX31-1XXXX6\browser-extension-data > @owl-comfortable-reading-addon
Then you just edit storage.js

it keeps on disabling itself. I can't edit the lists.

Can an extension change it's icon in the toolbar on the fly?

If so, it would be very nice if the ICON changed when OWL is enabled (so I tell what made the screen all black!)

how do you add websites to whitelist??

Pretty good, but the enable/disable is to coarse for me. I use Gmail and Tasks canvas and they should have different settings although both in mail.google.com domain.